Steering problem 2003 Subaru Outback

I have a 2003 Subaru outback and sometimes when I go to back into a parking space or straighten out after pulling into a parking space my steering wheel becomes incredibly difficult to turn. It used to only do this when I was backing into a space but now it has started doing it when I pull forward into a space as well. This happens most often when I am driving to multiple places and have to park several times over a period of a few hours. I’ve monitored my power steering fluid and the power steering pump was replaced not too long ago. Any ideas on what’s causing this?

Either a bad rack or a binding ball joint or tie rod end. Someone will need to check this out from underneath the vehicle.